I think you should keep those and sell your silver/chrome ones to me!?
Everything is for sale and i'd let the Chrome ones go, but.... and it is a big but. They are a week or so old, and have nearly £700 worth of Michelin Cross Climates fitted to them, which would be sold as a package. Plus the hassle of getting the Copper ones colour changed and then i'd want another set of Cross Climates whacking on. That all equates to daft money.